# Pointers to the Alpha Beta Filter
###### tags: `Pointers`
## Docs
- [Meso Research Plan for Alpha Beta Filter](/aXjjtYsoQfmVkPRgt9sZLg)
- [Alpha-Beta Filtering Spec](https://docs.google.com/document/d/19rTp_B47f8WqZZdInm5oeNM_PQKRWSRk_QAzjvfWi0U/edit#heading=h.vpqt548qkt6h)
- [Induced inertia due to the alpha beta parameters](/-6dXzpeYRduyqxQPASdIDQ)
## Code
- [Alpha Beta Filter Definition (util)](https://github.com/filecoin-project/specs-actors/blob/master/actors/util/smoothing/alpha_beta_filter.go)
- [Power Estimator](https://github.com/filecoin-project/builtin-actors/blob/0976d972c7fc52c59905ab291d26fef104061268/actors/reward/src/state.rs)
- [Reward Estimator](https://github.com/filecoin-project/builtin-actors/blob/89d5669dcdeeadd1b4315511cc24eac72a238c36/actors/power/src/state.rs#L241)
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